After that era of the Days of Moshiach, there will be an incomparably more wondrous period – the eternal era of the Resurrection of the Dead – which is called the “World to Come”. It will be the time of the full Divine revelation and the ultimate spiritual reward that God is holding in store for the righteous.
What will be the distinction between the era of the Days of Moshiach and the era of the World to Come? In the Days of Moshiach, the world in general will still be in its natural condition. People will continue to eat, drink, sleep, and be occupied with all the body’s physical needs, while at the same time, a person will be able to connect his mind and emotions with expanded knowledge of God, blessed be He. Therefore, there will also be birth and death in that era, although the natural human lifespan will be greatly increased.
In the subsequent era of the World to Come, the natural order will be removed. The physical existence of every creation will be unnoticeable in comparison to its Godly essence that will be openly revealed, like a tiny flame of a match when it is held up before the face of the sun. There will be no physical bodily needs, and yet the body will continue to exist, recognizing and unifying with God according to a greatly increased and indescribable capacity. There will no more eating, drinking, sleeping, birth or death. Regarding this time, the verse states: ”Death will be swallowed up forever...” (Seven Gates of Righteous Knowledge by Rabbi Moshe Weiner and Dr. Michael Schulman, Ask Noah International, 2017, p 181-182)